PROJECT HIGHLIGHTS
- Under construction, 2014
- Commercial WW, Greenfield
- Permit(s); Not Required
- 10/NA/0.2 (TN/TP/Turbidity
- MMF Capacity: 0.3 MGD
- 1 FTE (Full-Time Employee)
- Casino,Prison => Subsurface disposal
A compact design to maximize flow per total footprint
DESCRIPTION
MBR system was required to treat combined flows from a casino and prison to be discharged to the groundwater. The Tribe decided to employ membrane bioreactor (MBR) technology in part to increase the level of wastewater treatment. MBRs were also selected for their ability to minimize site footprint requirements on the property and provide the capability for remote facility operations, nutrient removal. The Nisqually plant is currently under construction.
LOCATION
Olympia, WA
IMAGES
PROJECT OVERVIEW
| System Type(s) | OVIVO® MBR |
|---|---|
| Previous Facility Type | Septic Field |
| Owner | Nisqually Tribe |
| Engineer | Parametrix |
| Contractor | Prospect Construction |
| Operations | |
| Delivery Method | Pre-Selection |
| Time To Retrofit | |
| Total Installed Project Cost | $ |
PLANT DESIGN INFORMATION
| Fine Screen Type | Drum Screen |
|---|---|
| Aperture or Slot Size | 3 mm |
| Supplemental Aeration Technology | Fine Bubble, Tubes |
| MBR Blower Type | Positive Dispacement |
| Solids Management Data | Aerobic Digestion |
| SCADA System | WonderWare |
| Disinfection Method | UV |
| # Process Stages | 3 |
MBR (MEMBRANE ZONE) DESIGN
| Filtration Mode | Pump assisted gravity |
|---|---|
| # of Reactors : | 2 |
| Submerged Membrane Unit (SMU) | OV400 |
| # SMU | 8 |
| Design Flux (MMF) | 8.71 gfd |
| Minimum Temperature | 10°C |
| Peak Factor | 4.5 |
| # of Maintenance Cleans | 4 |
